F2.
I don't THINK so. Unless one of us is imperiused to think that we're not under the imperius. But I also think since we're considering that we might be under the imperius and want to get tested to make sure that we're not under the imperius, that we're not actually under the imperius, because if we go and get tested for imperius and ARE, then they'll be able to identify that and then we'll know, and maybe they'll be able to remove it, and that would kind of defeat the whole purpose of whoever did it doing it in the first place. But then maybe we're just saying that we'll go right now to have it checked out but then won't actually do it, and that's the imperius fail-safe to make sure it doesn't actually get removed. So maybe we should end up getting tested for it together? So that we can be sure for the other person.